Taking a guess this is the right place to put this? Please move it if necessary.

System is a 3.2.2 frugal install on an amd x86_64 mobo. Here's my dumb problem, which I'm not certain is really a problem? I have the latest upgraded Firefox 53-something, which has the same issue it has always had since install: there are no up/down buttons in the elevator field. So any click in the blank region of the elevator will result in a jump to the beginning or end of the file. You can still move it by dragging the elevator up/down, and keyboard arrow keys still work.